Two-Sample Tests Results

Click the OK button in the Comparing Survival in Two Groups dialog box to display the Two-Sample Tests Results dialog box, which contains three tabs: Quick, Two-sample tests, and Function plots.

The options on these tabs are used to compute five different nonparametric tests for comparing the survival function in two groups.

Option	Description
Summary box	Displays summary information about the current analysis.
Copy button	Copies either the selected text (if text has been selected) in the Summary box or all of the text (if no text has been selected) to the Clipboard. Note that the copied text retains formatting information (such as font, color).
Contract/Expand button	Contracts or expands the Summary box. When contracted, you can see only one line of the Summary box text and can scroll through the text using a scroll bar. Note that when contracted, the text is scrolled so that the first non-blank line is at the top. When expanded (the default setting), the entire Summary box is displayed.
Gehan test	Displays a spreadsheet with the results of Gehan's Wilcoxon test. In addition to the Gehan-Wilcoxon test statistic, the spreadsheet lists all observations (survival times; note that censored observations are marked by a + sign), the group to which each belongs, the number of observations that are smaller than the respective observation (under the column header R1), and the number of observations that are larger than the respective observation (under the column header R2).
Cancel	Closes the dialog box without performing an analysis and returns to the Comparing Survival in Two Groups dialog box.
Options	Displays the Options menu.
By Group	Displays the By Group specification dialog box.